Explanation:
Hence, the correct answer is 'Nuclear membrane'.

Answer:
where's your data? tho, i think we're answering the samee thingggg. here's mineee
Reproductive isolation. Species refer to the group of organisms which share common morphological features and can interbreed and produce a viable offspring. Thus, the organisms of one species are reproductively isolated from the organisms of other species
Human traits controlled by multiple alleles are called multiple-allele traits. One widely known example is ABO blood type, which is controlled by 3 alleles.
Answer:
It would help the zookeeper in their breeding program so as not to interbreed the four different species, but rather to breed each species seperately, so as to keep the giraffe as a whole from population pollution by producing hybrids that do not have much conservation values.